What makes the bewildering challenges in this tantalizing selection so deviously different from other puzzle collections? Because inside these pages, you'll find a huge variety of uncommon mind bogglers, each providing a terrific change of pace. As a bonus for fanatics who love classic puzzles, we've added top-notch crosswords that are perfect for honing your wordplay skills. You'll solve the Frames Games by coming up with a well-known saying, person, place, or thing. In the mood for some tough chess problems? You'll find some of our trickiest here. Are your numbers oriented? Flex your numeric agility solving the challenging Cross Sums puzzles. Whichever shrewd problems you pick, You'll spend many entertaining hours trying to figure them out.